CaratHunter
Plans
Round|Lab Grown|IGI

6.00ct D IF Round Lab Grown Diamond

EX • D/IF • IGI LG729550851

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729550851

Diamond specifications and retailer prices

From $10,420 USD
As of October 29, 2026
Save $26,437 USD (72%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $36,857 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 6ct lab-grown round diamond

This 6ct lab-grown round sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729550851 or 729550851. Listed at 25 retailers as of October 29, 2026, with prices from $10,420 to $36,857, a $26,437 spread on the same certified stone. Taylor and Hart lists it at $36,857. 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

6.00
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729550851
Dimensions11.80 × 11.84 × 6.98 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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
11.80 mm11.84 mm6.00 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729550851
Side View
Table 62.0%Crown 33.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.0%

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: $10,632 USD|Low: $10,420 USD|High: $62,381 USD|Avg: $20,288 USD|-15.9%
Retailer 1
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
Taylor and Hart
October 30, 2026
Retailer 18$10,420 USD
Retailer 1$10,632 USD
Retailer 17$11,669 USD
Retailer 2$11,900 USD
Retailer 5$12,087 USD
Retailer 9$12,825 USD
Retailer 10$14,178 USD
Retailer 14$14,314 USD
Retailer 3$17,313 USD
Retailer 15$18,291 USD
Retailer 4$19,088 USD
Retailer 12$22,050 USD
Retailer 11$22,108 USD
Retailer 16$23,389 USD
Retailer 6$24,385 USD
Retailer 8$27,353 USD
Retailer 13$33,677 USD
Taylor and Hart$36,857 USD
Retailer 7$62,381 USD

40 data points across 19 retailers

25 retailers$10,420 USD to $36,857 USD

A
Cheapest Retailer
-
$10,420 USD
A
Retailer 2
-
$10,632 USD
View
A
Retailer 3
-
$11,669 USD
View
Final sale: no returns
A
Retailer 4
-
$11,900 USD
View
A
Retailer 5
-
$12,087 USD
View
Retailer 6
-
$12,825 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$12,996 USD
View
A
Retailer 8
-
$13,379 USD
View
A
Retailer 9
-
$13,585 USD
View
A
Retailer 10
-
$14,178 USD
View
A
Retailer 11
-
$14,314 USD
£11,270 GBP
View
Retailer 12
-
$14,495 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$17,313 USD
£13,632 GBP
View
B+
Retailer 14
-
$18,291 USD
View
B+
Retailer 15
-
$19,088 USD
£15,030 GBP
View
B+
Retailer 16
-
$20,964 USD
View
B+
Retailer 17
-
$22,050 USD
View
B+
Retailer 18
-
$22,108 USD
View
B+
Retailer 19
-
$23,389 USD
ZAR 377,849 ZAR
View
B+
Retailer 20
-
$24,385 USD
€23,224 EUR
View
Retailer 21
-
$27,353 USD
A$42,082 AUD
View
Price last confirmed 8 days ago
B
Retailer 22
-
$33,677 USD
View
Retailer 23
-
$36,140 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Taylor and Hart
DOPP65X · Oct 30
$36,857 USD
View
23 more retailers have this diamond
Prices start from $10,420 USDSave up to $26,437 USD

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
6.00ct Round
$10,420 USD