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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1565217557

Certificate GIA 1565217557

Diamond specifications and retailer prices

From $576 USD
HK$4,500 HKD
As of November 1, 2026
Save $472 USD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,048 USD at With Clarity · As of November 1, 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 $576 to $1,048, a $472 spread on the same certified stone. With Clarity lists it at $1,048. 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: $1,030 USD|Low: $563 USD|High: $1,083 USD|Avg: $818 USD|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
November 2, 2026
Retailer 2$576 USD
Retailer 3$671 USD
Retailer 4$716 USD
Retailer 5$752 USD
Retailer 7$767 USD
Retailer 6$798 USD
Retailer 1$1,030 USD
With Clarity$1,048 USD

26 data points across 8 retailers

8 retailers$576 USD to $1,048 USD

A
Cheapest Retailer
-
$576 USD
HK$4,500 HKD
B+
Retailer 2
-
$671 USD
View
B+
Retailer 3
-
$716 USD
View
Final sale: no returns
B+
Retailer 4
-
$752 USD
SGD 1,016 SGD
View
B
Retailer 5
-
$767 USD
View
Retailer 6
-
$798 USD
SGD 1,079 SGD
View
Price last confirmed 7 days ago
B
Retailer 7
-
$1,030 USD
€981 EUR
View
Most Expensive
B
With Clarity
1565217557 · Nov 1
$1,048 USD
View
7 more retailers have this diamond
Prices start from $576 USDSave up to $472 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.

A
0.51ct Marquise
$576 USD