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Oval|Lab Grown|IGI

12.83ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG573313066

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG573313066

Diamond specifications and retailer prices

From $2,071 USD
£1,631 GBP
As of October 27, 2026
Save $16,439 USD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $18,510 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.83ct lab-grown oval diamond

This 12.83ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573313066 or 573313066. Listed at 11 retailers as of October 27, 2026, with prices from $2,071 to $18,510, a $16,439 spread on the same certified stone. Brilliant Earth lists it at $18,510. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

12.83
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573313066
Dimensions19.20 × 13.12 × 8.20 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
19.20 mm13.12 mm12.83 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573313066
Side View
Table 59.5%Crown 36.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $20,090 USD|Low: $2,071 USD|High: $22,871 USD|Avg: $10,865 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
Retailer 17
November 1, 2026
Retailer 14$2,071 USD
Retailer 10$2,919 USD
Retailer 15$3,675 USD
Retailer 6$4,019 USD
Retailer 2$4,317 USD
Retailer 11$4,429 USD
Retailer 5$4,433 USD
Retailer 4$5,301 USD
Retailer 3$6,404 USD
Retailer 16$8,774 USD
Retailer 12$11,230 USD
Retailer 17$12,419 USD
Retailer 13$13,810 USD
Brilliant Earth$20,090 USD
Retailer 7$21,160 USD
Retailer 9$21,160 USD
Retailer 8$22,871 USD

11 data points across 17 retailers

11 retailers$2,071 USD to $18,510 USD

A
Cheapest Retailer
-
$2,071 USD
£1,631 GBP
A
Retailer 2
-
$2,919 USD
View
B+
Retailer 3
-
$3,675 USD
View
B+
Retailer 4
-
$4,317 USD
£3,399 GBP
View
B
Retailer 5
-
$4,429 USD
View
B
Retailer 6
-
$6,404 USD
View
B
Retailer 7
-
$8,774 USD
View
B
Retailer 8
-
$11,230 USD
View
B
Retailer 9
-
$12,419 USD
View
B
Retailer 10
-
$13,810 USD
View
Most Expensive
B
Brilliant Earth
22301618A · Oct 31
$18,510 USD
View
10 more retailers have this diamond
Prices start from $2,071 USDSave up to $16,439 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
12.83ct Oval
$2,071 USD