CaratHunter
Plans
Round|Natural|GIA

1.59ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2554325585

Certificate GIA 2554325585

Diamond specifications and retailer prices

From $7,558 SGD
$5,910 USD
As of November 1, 2026
Save $5,840 SGD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $13,398 SGD at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.59ct natural round diamond

This 1.59ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554325585. Listed at 11 retailers as of October 26, 2026, with prices from $7,558 to $13,398, a $5,840 spread on the same certified stone. Wholesale Diamonds Direct lists it at $13,398. 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

1.59
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2554325585
Dimensions7.46 × 7.41 × 4.67 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.46 mm7.41 mm1.59 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554325585
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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: $8,959 SGD|Low: $7,558 SGD|High: $13,555 SGD|Avg: $9,669 SGD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 2, 2026
Retailer 9$7,558 SGD
Retailer 5$8,038 SGD
Retailer 2$8,901 SGD
Retailer 1$8,959 SGD
Retailer 10$9,172 SGD
Retailer 3$9,507 SGD
Retailer 6$9,617 SGD
Retailer 7$9,617 SGD
Retailer 8$9,937 SGD
Retailer 4$11,754 SGD
Wholesale Diamonds Direct$13,398 SGD

43 data points across 11 retailers

11 retailers$7,558 SGD to $13,398 SGD

A
Cheapest Retailer
-
$7,558 SGD
$5,910 USD
B+
Retailer 2
-
$8,038 SGD
$6,285 USD
View
B+
Retailer 3
-
$8,901 SGD
A$10,708 AUD
View
B+
Retailer 4
-
$8,959 SGD
£5,516 GBP
View
B+
Retailer 5
-
$9,172 SGD
$7,172 USD
View
B+
Retailer 6
-
$9,507 SGD
€7,080 EUR
View
B+
Retailer 7
-
$9,617 SGD
$7,520 USD
View
B+
Retailer 8
-
$9,617 SGD
$7,520 USD
View
B
Retailer 9
-
$9,937 SGD
$7,770 USD
View
B
Retailer 10
-
$11,754 SGD
ZAR 148,475 ZAR
View
Most Expensive
B
Wholesale Diamonds Direct
246709547 · Oct 26
$13,398 SGD
$10,477 USD
View
10 more retailers have this diamond
Prices start from $7,558 SGDSave up to $5,840 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
1.59ct Round
$7,558 SGD