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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 $643 AUD
$452 USD
As of November 1, 2026
Save $2,432 AUD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,075 AUD 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 $643 to $3,075, a $2,432 spread on the same certified stone. Rare Carat lists it at $3,075. 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
Colour
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: $3,075 AUD|Low: $643 AUD|High: $6,634 AUD|Avg: $2,143 AUD
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 2, 2026
Retailer 13$643 AUD
Retailer 6$722 AUD
Retailer 15$799 AUD
Retailer 17$893 AUD
Retailer 11$978 AUD
Retailer 14$1,004 AUD
Retailer 4$1,251 AUD
Retailer 16$1,258 AUD
Retailer 2$1,322 AUD
Retailer 7$1,610 AUD
Retailer 3$1,881 AUD
Retailer 12$2,147 AUD
Retailer 5$2,567 AUD
Retailer 10$2,934 AUD
Rare Carat$3,075 AUD
Retailer 9$6,392 AUD
Retailer 8$6,634 AUD

6 data points across 17 retailers

14 retailers$643 AUD to $3,075 AUD

A
Cheapest Retailer
-
$643 AUD
$452 USD
A
Retailer 2
-
$722 AUD
$507 USD
View
A
Retailer 3
-
$799 AUD
$561 USD
View
A
Retailer 4
-
$893 AUD
HK$4,900 HKD
View
A
Retailer 5
-
$978 AUD
£541 GBP
View
A
Retailer 6
-
$1,004 AUD
$705 USD
View
B+
Retailer 7
-
$1,251 AUD
$879 USD
View
A
Retailer 8
-
$1,258 AUD
$884 USD
View
A
Retailer 9
-
$1,322 AUD
£731 GBP
View
B+
Retailer 10
-
$1,881 AUD
$1,321 USD
View
B+
Retailer 11
-
$2,147 AUD
$1,508 USD
View
B
Retailer 12
-
$2,567 AUD
$1,803 USD
View
B
Retailer 13
-
$2,934 AUD
£1,623 GBP
View
Most Expensive
B
Rare Carat
KI8455978KF681 · Nov 1
$3,075 AUD
$2,160 USD
View
13 more retailers have this diamond
Prices start from $643 AUDSave up to $2,432 AUD

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
$643 AUD