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Cushion|Natural|GIA

1.70ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 1358142620

Certificate GIA 1358142620

Diamond specifications and retailer prices

From $10,448 SGD
$8,173 USD
As of October 31, 2026
Save $8,083 SGD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $18,531 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.7ct natural cushion diamond

This 1.7ct natural cushion sits in the one-and-a-half to two 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 1358142620. Listed at 20 retailers as of October 31, 2026, with prices from $10,448 to $18,531, a $8,083 spread on the same certified stone. MOH London lists it at $18,531. 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

1.70
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1358142620
Dimensions7.58 × 6.67 × 4.27 mm
L/W Ratio1.14
Culet sizeNone
Top View
7.58 mm6.67 mm1.70 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1358142620
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.0%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $18,531 SGD|Low: $9,888 SGD|High: $18,755 SGD|Avg: $13,761 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 8$10,448 SGD
Retailer 6$11,866 SGD
Retailer 7$11,866 SGD
Retailer 2$12,985 SGD
Retailer 5$13,049 SGD
Retailer 4$14,198 SGD
Retailer 3$17,432 SGD
MOH London$18,531 SGD

44 data points across 8 retailers

20 retailers$10,448 SGD to $18,531 SGD

B+
Cheapest Retailer
-
$10,448 SGD
$8,173 USD
B
Retailer 2
-
$10,973 SGD
$8,583 USD
View
B
Retailer 3
-
$11,109 SGD
$8,690 USD
View
B
Retailer 4
-
$11,460 SGD
$8,964 USD
View
B
Retailer 5
-
$11,504 SGD
CA$12,498 CAD
View
B
Retailer 6
-
$11,761 SGD
$9,200 USD
View
B
Retailer 7
-
$11,866 SGD
$9,282 USD
View
B
Retailer 8
-
$11,866 SGD
$9,282 USD
View
Final sale: no returns
B
Retailer 9
-
$12,985 SGD
£7,998 GBP
View
Retailer 10
-
$13,049 SGD
A$15,703 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$13,147 SGD
$10,284 USD
View
B
Retailer 12
-
$13,202 SGD
$10,327 USD
View
B
Retailer 13
-
$13,676 SGD
$10,698 USD
View
B
Retailer 14
-
$13,960 SGD
$10,920 USD
View
B
Retailer 15
-
$13,960 SGD
$10,920 USD
View
B
Retailer 16
-
$14,198 SGD
€10,577 EUR
View
B
Retailer 17
-
$14,433 SGD
$11,290 USD
View
Retailer 18
-
$15,614 SGD
$12,214 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$17,432 SGD
ZAR 220,288 ZAR
View
Most Expensive
B
MOH London
86971E802 · Nov 1
$18,531 SGD
£11,414 GBP
View
19 more retailers have this diamond
Prices start from $10,448 SGDSave up to $8,083 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+
1.70ct Cushion
$10,448 SGD