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Round|Lab Grown|IGI

12.55ct E VS2 Round Lab Grown Diamond

EX • E/VS2 • IGI LG788637051

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788637051

Diamond specifications and retailer prices

From $3,942 USD
HK$30,800 HKD
As of October 31, 2026
Save $22,788 USD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $26,730 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.55ct lab-grown round diamond

This 12.55ct lab-grown round sits in the over five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG788637051 or 788637051. Listed at 17 retailers as of October 31, 2026, with prices from $3,942 to $26,730, a $22,788 spread on the same certified stone. Brilliant Earth lists it at $26,730. 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

12.55
Carat
E
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788637051
Dimensions15.09 × 15.16 × 8.91 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.09 mm15.16 mm12.55 ctE / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788637051
Side View
Table 62.0%Crown 32.4°Girdle: MediumPavilion 40.7°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 31
Current: $26,730 USD|Low: $3,266 USD|High: $26,730 USD|Avg: $7,719 USD
Brilliant Earth
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
November 1, 2026
Retailer 8$3,266 USD
Retailer 4$3,319 USD
Retailer 7$3,482 USD
Retailer 12$3,942 USD
Retailer 11$4,352 USD
Retailer 13$4,410 USD
Retailer 14$4,599 USD
Retailer 10$5,138 USD
Retailer 16$5,344 USD
Retailer 3$5,928 USD
Retailer 6$6,245 USD
Retailer 5$8,636 USD
Retailer 15$10,126 USD
Retailer 2$11,540 USD
Retailer 9$16,854 USD
Brilliant Earth$26,730 USD

34 data points across 16 retailers

17 retailers$3,942 USD to $26,730 USD

Retailer 1
-
$3,002 USD
Price last confirmed 21 days ago
Retailer 2
-
$3,266 USD
View
Price last confirmed 18 days ago
Retailer 3
-
$3,482 USD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$3,942 USD
HK$30,800 HKD
View
Retailer 5
-
$4,351 USD
View
Price last confirmed 22 days ago
A
Retailer 6
-
$4,352 USD
View
A
Retailer 7
-
$4,410 USD
View
A
Retailer 8
-
$4,599 USD
£3,622 GBP
View
A
Retailer 9
-
$5,138 USD
€4,893 EUR
View
A
Retailer 10
-
$5,344 USD
View
A
Retailer 11
-
$5,928 USD
£4,668 GBP
View
Retailer 12
-
$6,245 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$8,636 USD
View
B+
Retailer 14
-
$10,126 USD
View
B
Retailer 15
-
$11,540 USD
SGD 15,594 SGD
View
B
Retailer 16
-
$16,854 USD
View
Most Expensive
B
Brilliant Earth
18572424A · Oct 31
$26,730 USD
View
16 more retailers have this diamond
Prices start from $3,942 USDSave up to $22,788 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
12.55ct Round
$3,942 USD