CaratHunter
Plans
Oval|Lab Grown|IGI

1.57ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG778614306

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG778614306

Diamond specifications and retailer prices

From $488 SGD
$382 USD
As of October 30, 2026
Save $1,122 SGD (70%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,611 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778614306 or 778614306. Listed at 7 retailers as of October 30, 2026, with prices from $488 to $1,611, a $1,122 spread on the same certified stone. Brilliant Earth lists it at $1,611. 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

1.57
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778614306
Dimensions9.30 × 6.47 × 4.00 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.30 mm6.47 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778614306
Side View
Table 61.0%Crown 35.5°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 61.8%

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 30
Current: $1,611 SGD|Low: $467 SGD|High: $2,084 SGD|Avg: $964 SGD|-22.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2$488 SGD
Retailer 5$656 SGD
Retailer 6$665 SGD
Retailer 3$684 SGD
Retailer 7$1,236 SGD
Retailer 4$1,466 SGD
Brilliant Earth$1,611 SGD

39 data points across 7 retailers

7 retailers$488 SGD to $1,611 SGD

B+
Cheapest Retailer
-
$488 SGD
$382 USD
Retailer 2
-
$656 SGD
€489 EUR
View
Price last confirmed 8 days ago
A
Retailer 3
-
$665 SGD
$520 USD
View
A
Retailer 4
-
$684 SGD
£421 GBP
View
B
Retailer 5
-
$1,236 SGD
$967 USD
View
B
Retailer 6
-
$1,466 SGD
£903 GBP
View
Most Expensive
B
Brilliant Earth
21027109A · Oct 30
$1,611 SGD
$1,260 USD
View
6 more retailers have this diamond
Prices start from $488 SGDSave up to $1,122 SGD

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
1.57ct Oval
$488 SGD