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Marquise|Natural|GIA

0.81ct D SI1 Marquise Natural Diamond

GD • D/SI1 • GIA 2566590641

Certificate GIA 2566590641

Diamond specifications and retailer prices

From $2,429 SGD
$1,900 USD
As of October 28, 2026
Save $625 SGD (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $3,054 SGD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.81ct natural marquise diamond

This 0.81ct natural marquise sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2566590641. Listed at 5 retailers as of October 28, 2026, with prices from $2,429 to $3,054, a $625 spread on the same certified stone. Blue Nile lists it at $3,054. 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

0.81
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566590641
Dimensions9.48 × 4.93 × 3.05 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
9.48 mm4.93 mm0.81 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566590641
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.9%

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: Oct 28
Current: $3,054 SGD|Low: $2,429 SGD|High: $3,054 SGD|Avg: $2,761 SGD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5$2,429 SGD
Retailer 3$2,548 SGD
Retailer 2$2,778 SGD
Retailer 4$2,881 SGD
Blue Nile$3,054 SGD

15 data points across 5 retailers

5 retailers$2,429 SGD to $3,054 SGD

A
Cheapest Retailer
-
$2,429 SGD
$1,900 USD
B+
Retailer 2
-
$2,548 SGD
$1,993 USD
View
B+
Retailer 3
-
$2,778 SGD
£1,711 GBP
View
B+
Retailer 4
-
$2,881 SGD
View
Most Expensive
B
Blue Nile
30408305 · Oct 31
$3,054 SGD
$2,389 USD
View
4 more retailers have this diamond
Prices start from $2,429 SGDSave up to $625 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
0.81ct Marquise
$2,429 SGD