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5.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG768629057

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768629057

Diamond specifications and retailer prices

From $13,618 NZD
$7,675 USD
As of November 1, 2026
Save $40,672 NZD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $54,290 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.51ct lab-grown round diamond

This 5.51ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG768629057 or 768629057. Listed at 14 retailers as of October 31, 2026, with prices from $13,618 to $54,290, a $40,672 spread on the same certified stone. Taylor and Hart lists it at $54,290. 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

5.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768629057
Dimensions11.36 × 11.42 × 6.95 mm
L/W Ratio1.01
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
11.36 mm11.42 mm5.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768629057
Side View
Table 56.0%Crown 34.5°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.0%

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: Nov 1
Current: $20,202 NZD|Low: $13,618 NZD|High: $64,780 NZD|Avg: $30,662 NZD|+0.4%
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
Taylor and Hart
November 1, 2026
Retailer 12$13,618 NZD
Retailer 3$15,594 NZD
Retailer 2$17,605 NZD
Retailer 13$18,419 NZD
Retailer 1$20,202 NZD
Retailer 11$27,897 NZD
Retailer 6$28,124 NZD
Retailer 5$29,211 NZD
Retailer 9$31,421 NZD
Retailer 8$34,205 NZD
Retailer 7$40,702 NZD
Retailer 4$46,242 NZD
Retailer 10$50,828 NZD
Taylor and Hart$54,290 NZD

42 data points across 14 retailers

14 retailers$13,618 NZD to $54,290 NZD

A
Cheapest Retailer
-
$13,618 NZD
$7,675 USD
A
Retailer 2
-
$15,594 NZD
$8,789 USD
View
Retailer 3
-
$16,144 NZD
$9,099 USD
View
Price last confirmed 76 days ago
A
Retailer 4
-
$17,605 NZD
$9,922 USD
View
A
Retailer 5
-
$18,419 NZD
HK$81,100 HKD
View
A
Retailer 6
-
$20,202 NZD
£8,965 GBP
View
A
Retailer 7
-
$27,897 NZD
$15,723 USD
View
A
Retailer 8
-
$28,124 NZD
€15,096 EUR
View
B+
Retailer 9
-
$31,421 NZD
£13,944 GBP
View
B+
Retailer 10
-
$34,205 NZD
ZAR 311,441 ZAR
View
B+
Retailer 11
-
$40,702 NZD
$22,940 USD
View
B+
Retailer 12
-
$46,242 NZD
$26,062 USD
View
B
Retailer 13
-
$50,828 NZD
$28,647 USD
View
Most Expensive
B
Taylor and Hart
BCB6Q9W · Oct 31
$54,290 NZD
$30,598 USD
View
13 more retailers have this diamond
Prices start from $13,618 NZDSave up to $40,672 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
5.51ct Round
$13,618 NZD