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Oval|Lab Grown|IGI

3.55ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG681597845

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG681597845

Diamond specifications and retailer prices

From $452 USD
As of November 1, 2026
Save $1,708 USD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,160 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.55ct lab-grown oval diamond

This 3.55ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG681597845 or 681597845. Listed at 14 retailers as of November 1, 2026, with prices from $452 to $2,160, a $1,708 spread on the same certified stone. Rare Carat lists it at $2,160. 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

3.55
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681597845
Dimensions12.59 × 8.38 × 5.31 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.59 mm8.38 mm3.55 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681597845
Side View
Table 60.0%Crown 35.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
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: Nov 1
Current: $2,160 USD|Low: $452 USD|High: $4,660 USD|Avg: $1,508 USD
Rare Carat
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 13$452 USD
Retailer 6$507 USD
Retailer 15$561 USD
Retailer 17$627 USD
Retailer 10$687 USD
Retailer 14$705 USD
Retailer 4$879 USD
Retailer 16$884 USD
Retailer 11$928 USD
Retailer 7$1,131 USD
Retailer 3$1,321 USD
Retailer 12$1,508 USD
Retailer 5$1,803 USD
Retailer 2$2,061 USD
Rare Carat$2,160 USD
Retailer 9$4,490 USD
Retailer 8$4,660 USD

5 data points across 17 retailers

14 retailers$452 USD to $2,160 USD

A
Cheapest Retailer
-
$452 USD
A
Retailer 2
-
$507 USD
View
A
Retailer 3
-
$561 USD
View
A
Retailer 4
-
$627 USD
HK$4,900 HKD
View
A
Retailer 5
-
$687 USD
£541 GBP
View
A
Retailer 6
-
$705 USD
View
B+
Retailer 7
-
$879 USD
View
A
Retailer 8
-
$884 USD
View
A
Retailer 9
-
$928 USD
£731 GBP
View
B+
Retailer 10
-
$1,321 USD
View
B+
Retailer 11
-
$1,508 USD
View
B
Retailer 12
-
$1,803 USD
View
B
Retailer 13
-
$2,061 USD
£1,623 GBP
View
Most Expensive
B
Rare Carat
KI8455978KF681 · Nov 1
$2,160 USD
View
13 more retailers have this diamond
Prices start from $452 USDSave up to $1,708 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
3.55ct Oval
$452 USD