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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2556716912

Certificate GIA 2556716912

Diamond specifications and retailer prices

From $413 USD
₹39,314 INR
As of November 1, 2026
Save $867 USD (68%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,739 USD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556716912. Listed at 17 retailers as of November 1, 2026, with a 210% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.50
Carat
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556716912
Dimensions7.93 × 4.17 × 2.67 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal
Top View
7.93 mm4.17 mm0.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556716912
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: 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: $686 USD|Low: $351 USD|High: $1,318 USD|Avg: $636 USD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$413 USD
Retailer 9$474 USD
Retailer 2$475 USD
Retailer 8$511 USD
Retailer 7$551 USD
Retailer 10$583 USD
Retailer 4$662 USD
Retailer 1$686 USD
Retailer 6$772 USD
Retailer 5$1,280 USD

31 data points across 10 retailers

17 retailers$413 USD to $1,280 USD

A
Cheapest Retailer
-
$413 USD
₹39,314 INR
A
Retailer 2
-
$474 USD
HK$3,700 HKD
View
A
Retailer 3
-
$475 USD
View
B+
Retailer 4
-
$511 USD
View
Final sale: no returns
Retailer 5
-
$550 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
$551 USD
SGD 745 SGD
View
Retailer 7
-
$555 USD
View
Price last confirmed 25 days ago
A
Retailer 8
-
$583 USD
SGD 788 SGD
View
Price last confirmed 7 days ago
Retailer 9
-
$608 USD
View
Price last confirmed 32 days ago
Retailer 10
-
$634 USD
View
Price last confirmed 41 days ago
Retailer 11
-
$640 USD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
$662 USD
£522 GBP
View
B+
Retailer 13
-
$686 USD
£540 GBP
View
B+
Retailer 14
-
$772 USD
View
B
Retailer 15
-
$1,280 USD
£1,008 GBP
View
Retailer 16
-
$1,724 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
c39abb66-5349-4569-9cd2-eb196732ba02 · Oct 3
$1,739 USD
View
Price last confirmed 29 days ago
16 more retailers have this diamond
Prices start from $413 USDSave up to $867 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
0.50ct Marquise
$413 USD