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Cushion|Lab Grown|GCAL

1.51ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • GCAL 301390008

Certificate GCAL 301390008

Diamond specifications and retailer prices

From $778 SGD
$608 USD
As of November 1, 2026
Save $2,624 SGD (77%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,402 SGD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 301390008. Listed at 3 retailers as of November 1, 2026, with prices from $778 to $3,402, a $2,624 spread on the same certified stone. Do Amore Diamonds lists it at $3,402. 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

1.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginLab Grown
Grading LabGCAL
CertificateGCAL 301390008
Dimensions7.00 × 6.47 × 4.38 mm
L/W Ratio1.08
Top View
7.00 mm6.47 mm1.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGCAL 301390008
Side View
Table 61.0%CrownGirdlePavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,402 SGD|Low: $746 SGD|High: $3,402 SGD|Avg: $1,596 SGD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
October 25, 2026
Retailer 3$778 SGD
Retailer 4$813 SGD
Retailer 2$2,108 SGD
Do Amore Diamonds$3,402 SGD

10 data points across 4 retailers

3 retailers$778 SGD to $3,402 SGD

B+
Cheapest Retailer
-
$778 SGD
$608 USD
Retailer 2
-
$2,108 SGD
£1,298 GBP
View
Price last confirmed 7 days ago
Most Expensive
C
Do Amore Diamonds
27-2FB0909E3 · Nov 2
$3,402 SGD
$2,660 USD
View
2 more retailers have this diamond
Prices start from $778 SGDSave up to $2,624 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.

B+
1.51ct Cushion
$778 SGD