Round|Natural|GIA

1.59ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 1236966257

Certificate GIA 1236966257

Diamond specifications and retailer prices

From $11,252 USD
£8,860 GBP
As of November 1, 2026
Save $5,016 USD (31%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $16,269 USD 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 $11,252 to $16,269, a $5,016 spread on the same certified stone. MOH London lists it at $16,269. 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
Color
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
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Price History

Last verified: Nov 1
Current: $16,269 USD|Low: $10,720 USD|High: $16,464 USD|Avg: $12,541 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5$10,720 USD
Retailer 2$11,252 USD
Retailer 4$11,489 USD
Retailer 3$12,741 USD
MOH London$16,269 USD

42 data points across 5 retailers

4 retailers$11,252 USD to $16,269 USD

B
Cheapest Retailer
-
$11,252 USD
£8,860 GBP
Retailer 2
-
$11,489 USD
A$17,676 AUD
View
Price last confirmed 8 days ago
C
Retailer 3
-
$12,741 USD
€12,134 EUR
View
Most Expensive
C
MOH London
E646EA968 · Nov 1
$16,269 USD
£12,810 GBP
View
3 more retailers have this diamond
Prices start from $11,252 USDSave up to $5,016 USD

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
$11,252 USD