CaratHunter
Plans
Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1565217557

Certificate GIA 1565217557

Diamond specifications and retailer prices

From €514 EUR
HK$4,500 HKD
As of November 1, 2026
Save €421 EUR (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €934 EUR at With Clarity · As of November 2, 2026
View at With Clarity

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H 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 1565217557. Listed at 8 retailers as of November 1, 2026, with prices from €514 to €934, a €421 spread on the same certified stone. With Clarity lists it at €934. 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

0.51
Carat
H
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565217557
Dimensions7.94 × 4.09 × 2.63 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.94 mm4.09 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1565217557
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.2%

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: Nov 1
Current: €918 EUR|Low: €502 EUR|High: €966 EUR|Avg: €729 EUR|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
November 2, 2026
Retailer 2€514 EUR
Retailer 3€598 EUR
Retailer 4€638 EUR
Retailer 5€670 EUR
Retailer 7€684 EUR
Retailer 6€712 EUR
Retailer 1€918 EUR
With Clarity€934 EUR

26 data points across 8 retailers

8 retailers€514 EUR to €934 EUR

A
Cheapest Retailer
-
€514 EUR
HK$4,500 HKD
B+
Retailer 2
-
€598 EUR
$671 USD
View
B+
Retailer 3
-
€638 EUR
$716 USD
View
Final sale: no returns
B+
Retailer 4
-
€670 EUR
SGD 1,016 SGD
View
B
Retailer 5
-
€684 EUR
$767 USD
View
Retailer 6
-
€712 EUR
SGD 1,079 SGD
View
Price last confirmed 7 days ago
B
Retailer 7
-
€918 EUR
View
Most Expensive
B
With Clarity
1565217557 · Nov 2
€934 EUR
$1,048 USD
View
7 more retailers have this diamond
Prices start from €514 EURSave up to €421 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
0.51ct Marquise
€514 EUR