Marquise|Natural|GIA

1.26ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 5231971694

Certificate GIA 5231971694

Diamond specifications and retailer prices

From $4,075 USD
As of November 6, 2026
Save $4,522 USD (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,597 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.26ct natural marquise diamond

This 1.26ct natural marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5231971694. Listed at 8 retailers as of November 2, 2026, with prices from $4,075 to $8,597, a $4,522 spread on the same certified stone. MOH London lists it at $8,597. 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

1.26
Carat
I
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231971694
Dimensions10.01 × 5.77 × 3.79 mm
L/W Ratio1.73
Culet sizeNone
Top View
10.01 mm5.77 mm1.26 ctI / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5231971694
Side View
Table 53.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $8,597 USD|Low: $3,976 USD|High: $8,700 USD|Avg: $5,575 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$4,075 USD
Retailer 5$4,374 USD
Retailer 4$4,390 USD
Retailer 6$5,469 USD
Retailer 3$5,842 USD
Retailer 8$5,957 USD
Retailer 2$6,074 USD
MOH London$8,597 USD

42 data points across 8 retailers

8 retailers$4,075 USD to $8,597 USD

B+
Cheapest Retailer
-
$4,075 USD
B+
Retailer 2
-
$4,374 USD
View
Final sale: no returns
B
Retailer 3
-
$4,390 USD
View
Retailer 4
-
$5,469 USD
View
Price last confirmed 34 days ago
B
Retailer 5
-
$5,842 USD
View
Retailer 6
-
$5,957 USD
View
Price last confirmed 23 days ago
B
Retailer 7
-
$6,074 USD
View
Most Expensive
C
MOH London
42EA1596D · Nov 2
$8,597 USD
£6,769 GBP
View
7 more retailers have this diamond
Prices start from $4,075 USDSave up to $4,522 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+
1.26ct Marquise
$4,075 USD