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Round|Lab Grown|IGI

6.31ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG634473125

Shape and cutting style on the report: Round brilliant

Certificate IGI LG634473125

Diamond specifications and retailer prices

From $17,890 NZD
$10,083 USD
As of October 29, 2026
Save $67,766 NZD (79%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $85,656 NZD at Michael Trio · As of October 31, 2026
View at Michael Trio

About this 6.31ct lab-grown round diamond

This 6.31ct lab-grown round sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG634473125 or 634473125. Listed at 24 retailers as of October 29, 2026, with prices from $17,890 to $85,656, a $67,766 spread on the same certified stone. Michael Trio lists it at $85,656. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.31
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634473125
Dimensions11.83 × 11.80 × 7.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.83 mm11.80 mm6.31 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634473125
Side View
Table 56.0%Crown 35.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $85,656 NZD|Low: $17,890 NZD|High: $85,656 NZD|Avg: $32,153 NZD
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 5$17,890 NZD
Retailer 4$18,605 NZD
Retailer 19$19,145 NZD
Retailer 7$20,274 NZD
Retailer 8$20,752 NZD
Retailer 6$21,467 NZD
Retailer 10$22,150 NZD
Retailer 20$22,152 NZD
Retailer 9$22,362 NZD
Retailer 11$22,802 NZD
Retailer 17$24,553 NZD
Retailer 13$27,154 NZD
Retailer 15$30,128 NZD
Retailer 18$35,351 NZD
Retailer 14$38,650 NZD
Retailer 3$43,314 NZD
Retailer 16$44,325 NZD
Retailer 2$44,478 NZD
Retailer 12$57,108 NZD
Michael Trio$85,656 NZD

29 data points across 20 retailers

24 retailers$17,890 NZD to $85,656 NZD

A
Cheapest Retailer
-
$17,890 NZD
$10,083 USD
A
Retailer 2
-
$18,174 NZD
$10,243 USD
View
A
Retailer 3
-
$18,605 NZD
$10,486 USD
View
A
Retailer 4
-
$19,145 NZD
$10,790 USD
View
Retailer 5
-
$20,274 NZD
£8,997 GBP
View
Price last confirmed 16 days ago
A
Retailer 6
-
$20,752 NZD
$11,696 USD
View
A
Retailer 7
-
$21,467 NZD
$12,099 USD
View
A
Retailer 8
-
$22,150 NZD
$12,484 USD
View
A
Retailer 9
-
$22,152 NZD
$12,485 USD
View
A
Retailer 10
-
$22,362 NZD
$12,603 USD
View
A
Retailer 11
-
$22,802 NZD
$12,851 USD
View
A
Retailer 12
-
$24,553 NZD
$13,838 USD
View
Final sale: no returns
A
Retailer 13
-
$27,154 NZD
£12,051 GBP
View
A
Retailer 14
-
$30,128 NZD
$16,980 USD
View
B+
Retailer 15
-
$35,351 NZD
£15,688 GBP
View
B+
Retailer 16
-
$37,956 NZD
$21,392 USD
View
B+
Retailer 17
-
$38,650 NZD
€20,746 EUR
View
Retailer 18
-
$43,314 NZD
A$37,557 AUD
View
Price last confirmed 10 days ago
B+
Retailer 19
-
$44,325 NZD
ZAR 403,580 ZAR
View
B+
Retailer 20
-
$44,478 NZD
A$38,566 AUD
View
B
Retailer 21
-
$57,108 NZD
$32,186 USD
View
B
Retailer 22
-
$68,102 NZD
$38,383 USD
View
B
Retailer 23
-
$80,145 NZD
$45,170 USD
View
Most Expensive
B
Michael Trio
4751405420 · Oct 31
$85,656 NZD
SGD 65,238 SGD
View
23 more retailers have this diamond
Prices start from $17,890 NZDSave up to $67,766 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
6.31ct Round
$17,890 NZD