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Round|Natural|GIA

1.59ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 1236966257

Certificate GIA 1236966257

Diamond specifications and retailer prices

From $14,506 SGD
£8,934 GBP
As of November 2, 2026
Save $6,292 SGD (30%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $20,798 SGD at MOH London · As of November 1, 2026
View at MOH London

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 very-good cut grade and certified by GIA 1236966257. Listed at 4 retailers as of November 1, 2026, with prices from $14,506 to $20,798, a $6,292 spread on the same certified stone. MOH London lists it at $20,798. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.59
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236966257
Dimensions7.55 × 7.67 × 4.49 mm
L/W Ratio1.02
Top View
7.55 mm7.67 mm1.59 ctI / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1236966257
Side View
Table 65.0%CrownGirdlePavilionCulet: NoneDepth 59.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $20,798 SGD|Low: $13,704 SGD|High: $21,048 SGD|Avg: $16,051 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$13,704 SGD
Retailer 2$14,506 SGD
Retailer 4$14,688 SGD
Retailer 3$16,217 SGD
MOH London$20,798 SGD

42 data points across 5 retailers

4 retailers$14,506 SGD to $20,798 SGD

B
Cheapest Retailer
-
$14,506 SGD
£8,934 GBP
Retailer 2
-
$14,688 SGD
A$17,676 AUD
View
Price last confirmed 9 days ago
C
Retailer 3
-
$16,217 SGD
€12,081 EUR
View
Most Expensive
C
MOH London
E646EA968 · Nov 1
$20,798 SGD
£12,810 GBP
View
3 more retailers have this diamond
Prices start from $14,506 SGDSave up to $6,292 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
1.59ct Round
$14,506 SGD