CaratHunter
Plans
Cushion|Natural|GIA

1.00ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 1398673309

Certificate GIA 1398673309

Diamond specifications and retailer prices

From $2,095 SGD
HK$12,800 HKD
As of November 1, 2026
Save $2,845 SGD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,941 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1398673309. Listed at 15 retailers as of November 1, 2026, with prices from $2,095 to $4,941, a $2,845 spread on the same certified stone. MOH London lists it at $4,941. 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

1.00
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1398673309
Dimensions5.85 × 5.77 × 3.89 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle, Natural
Top View
5.85 mm5.77 mm1.00 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1398673309
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 67.4%

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: Nov 1
Current: $4,941 SGD|Low: $2,079 SGD|High: $5,606 SGD|Avg: $3,230 SGD|-0.9%
MOH London
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
November 2, 2026
Retailer 8$2,095 SGD
Retailer 3$2,473 SGD
Retailer 11$2,603 SGD
Retailer 12$2,675 SGD
Retailer 2$2,751 SGD
Retailer 13$2,839 SGD
Retailer 4$2,954 SGD
Retailer 6$2,998 SGD
Retailer 7$3,069 SGD
Retailer 9$3,467 SGD
Retailer 14$3,468 SGD
Retailer 10$3,522 SGD
MOH London$4,941 SGD
Retailer 5$5,606 SGD

27 data points across 14 retailers

15 retailers$2,095 SGD to $4,941 SGD

A
Cheapest Retailer
-
$2,095 SGD
HK$12,800 HKD
B+
Retailer 2
-
$2,473 SGD
$1,934 USD
View
B+
Retailer 3
-
$2,548 SGD
$1,992 USD
View
B+
Retailer 4
-
$2,603 SGD
$2,035 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,675 SGD
$2,092 USD
View
B+
Retailer 6
-
$2,751 SGD
£1,694 GBP
View
B+
Retailer 7
-
$2,839 SGD
$2,220 USD
View
B+
Retailer 8
-
$2,914 SGD
View
B+
Retailer 9
-
$2,954 SGD
$2,310 USD
View
B+
Retailer 10
-
$2,998 SGD
$2,344 USD
View
B+
Retailer 11
-
$3,069 SGD
£1,890 GBP
View
B+
Retailer 12
-
$3,467 SGD
ZAR 43,791 ZAR
View
Retailer 13
-
$3,468 SGD
A$4,172 AUD
View
Price last confirmed 27 days ago
B+
Retailer 14
-
$3,522 SGD
€2,623 EUR
View
Most Expensive
B
MOH London
A64957593 · Nov 1
$4,941 SGD
£3,042 GBP
View
14 more retailers have this diamond
Prices start from $2,095 SGDSave up to $2,845 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
1.00ct Cushion
$2,095 SGD