CaratHunter
Plans
Cushion|Natural|GIA

1.80ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 2238538526

Certificate GIA 2238538526

Diamond specifications and retailer prices

From $4,063 SGD
A$4,888 AUD
As of November 1, 2026
Save $1,534 SGD (27%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,598 SGD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2238538526. Listed at 2 retailers as of November 1, 2026, with prices from $4,063 to $5,598, a $1,534 spread on the same certified stone. 77 Diamonds lists it at $5,598. 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

1.80
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2238538526
Dimensions7.05 × 6.61 × 4.49 mm
L/W Ratio1.07
Top View
7.05 mm6.61 mm1.80 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2238538526
Side View
Table 63.0%CrownGirdlePavilionCuletDepth 67.9%

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: Nov 1
Current: $5,598 SGD|Low: $4,063 SGD|High: $5,598 SGD|Avg: $4,764 SGD|+0.6%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$4,063 SGD
77 Diamonds$5,598 SGD

7 data points across 2 retailers

2 retailers$4,063 SGD to $5,598 SGD

A
Cheapest Retailer
-
$4,063 SGD
A$4,888 AUD
Most Expensive
B+
77 Diamonds
CUSMBNBCMETAP · Nov 2
$5,598 SGD
£3,446 GBP
View
1 more retailer has this diamond
Prices start from $4,063 SGDSave up to $1,534 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
1.80ct Cushion
$4,063 SGD