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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 €1,701 EUR
$1,900 USD
As of October 28, 2026
Save €438 EUR (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €2,138 EUR 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 €1,701 to €2,138, a €438 spread on the same certified stone. Blue Nile lists it at €2,138. 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
Color
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: €2,138 EUR|Low: €1,701 EUR|High: €2,138 EUR|Avg: €1,933 EUR
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 5€1,701 EUR
Retailer 3€1,784 EUR
Retailer 2€1,945 EUR
Retailer 4€2,017 EUR
Blue Nile€2,138 EUR

15 data points across 5 retailers

5 retailers€1,701 EUR to €2,138 EUR

A
Cheapest Retailer
-
€1,701 EUR
$1,900 USD
B+
Retailer 2
-
€1,784 EUR
$1,993 USD
View
B+
Retailer 3
-
€1,945 EUR
£1,711 GBP
View
B+
Retailer 4
-
€2,017 EUR
SGD 3,045 SGD
View
Most Expensive
B
Blue Nile
30408305 · Oct 31
€2,138 EUR
$2,389 USD
View
4 more retailers have this diamond
Prices start from €1,701 EURSave up to €438 EUR

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
€1,701 EUR