CaratHunter
Plans
Cushion|Natural|GIA

1.51ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 6545580701

Certificate GIA 6545580701

Diamond specifications and retailer prices

From $5,709 SGD
HK$34,800 HKD
As of October 29, 2026
Save $6,580 SGD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,290 SGD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545580701. Listed at 14 retailers as of October 28, 2026, with prices from $5,709 to $12,290, a $6,580 spread on the same certified stone. Queensmith lists it at $12,290. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545580701
Dimensions7.65 × 5.87 × 4.01 mm
L/W Ratio1.30
Top View
7.65 mm5.87 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545580701
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.4%

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 29
Current: $12,290 SGD|Low: $5,709 SGD|High: $12,379 SGD|Avg: $8,127 SGD|+2.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 9$5,709 SGD
Retailer 5$6,158 SGD
Retailer 8$6,566 SGD
Retailer 3$6,777 SGD
Retailer 10$7,013 SGD
Retailer 2$7,390 SGD
Retailer 11$7,524 SGD
Retailer 4$7,644 SGD
Retailer 12$7,799 SGD
Retailer 7$8,291 SGD
Retailer 6$11,256 SGD
Queensmith$12,290 SGD

31 data points across 12 retailers

14 retailers$5,709 SGD to $12,290 SGD

A
Cheapest Retailer
-
$5,709 SGD
HK$34,800 HKD
A
Retailer 2
-
$6,158 SGD
₹457,563 INR
View
A
Retailer 3
-
$6,566 SGD
View
A
Retailer 4
-
$6,777 SGD
View
A
Retailer 5
-
$7,013 SGD
$5,472 USD
View
Final sale: no returns
A
Retailer 6
-
$7,047 SGD
$5,498 USD
View
A
Retailer 7
-
$7,390 SGD
£4,540 GBP
View
B+
Retailer 8
-
$7,524 SGD
$5,870 USD
View
Retailer 9
-
$7,644 SGD
$5,964 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
$7,799 SGD
$6,085 USD
View
B+
Retailer 11
-
$7,946 SGD
A$9,538 AUD
View
B+
Retailer 12
-
$8,291 SGD
€6,161 EUR
View
B+
Retailer 13
-
$11,256 SGD
£6,915 GBP
View
Most Expensive
B
Queensmith
6545580701 · Oct 28
$12,290 SGD
£7,550 GBP
View
13 more retailers have this diamond
Prices start from $5,709 SGDSave up to $6,580 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
1.51ct Cushion
$5,709 SGD