Marquise|Natural|GIA

0.50ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 6551995451

Certificate GIA 6551995451

Diamond specifications and retailer prices

From $499 USD
HK$3,900 HKD
As of November 1, 2026
Save $1,374 USD (73%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,873 USD at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551995451. Listed at 19 retailers as of October 30, 2026, with prices from $499 to $1,873, a $1,374 spread on the same certified stone. NZ Jewellers lists it at $1,873. 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

0.50
Carat
H
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6551995451
Dimensions7.36 × 4.39 × 2.48 mm
L/W Ratio1.68
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.36 mm4.39 mm0.50 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 6551995451
Side View
Table 61.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 56.6%

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: $1,873 USD|Low: $499 USD|High: $1,949 USD|Avg: $811 USD|+4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 4$499 USD
Retailer 5$551 USD
Retailer 17$597 USD
Retailer 8$610 USD
Retailer 9$622 USD
Retailer 3$643 USD
Retailer 18$643 USD
Retailer 10$689 USD
Retailer 16$689 USD
Retailer 6$728 USD
Retailer 2$733 USD
Retailer 11$734 USD
Retailer 15$749 USD
Retailer 7$790 USD
Retailer 12$883 USD
Retailer 13$922 USD
Retailer 14$1,387 USD
NZ Jewellers$1,873 USD

24 data points across 18 retailers

19 retailers$499 USD to $1,873 USD

A
Cheapest Retailer
-
$499 USD
HK$3,900 HKD
B+
Retailer 2
-
$551 USD
View
Final sale: no returns
B+
Retailer 3
-
$597 USD
View
B+
Retailer 4
-
$610 USD
View
B+
Retailer 5
-
$622 USD
SGD 840 SGD
View
B+
Retailer 6
-
$643 USD
View
B+
Retailer 7
-
$643 USD
View
B+
Retailer 8
-
$689 USD
View
Retailer 9
-
$689 USD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
$728 USD
View
B+
Retailer 11
-
$733 USD
£577 GBP
View
B+
Retailer 12
-
$734 USD
£578 GBP
View
B
Retailer 13
-
$749 USD
£589 GBP
View
B
Retailer 14
-
$790 USD
View
B
Retailer 15
-
$883 USD
€841 EUR
View
B
Retailer 16
-
$922 USD
ZAR 14,897 ZAR
View
Retailer 17
-
$935 USD
A$1,438 AUD
View
Price last confirmed 29 days ago
C
Retailer 18
-
$1,387 USD
£1,092 GBP
View
Most Expensive
C
NZ Jewellers
db52232a-d06f-493f-8c91-145aa3536ffe · Oct 30
$1,873 USD
View
18 more retailers have this diamond
Prices start from $499 USDSave up to $1,374 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
$499 USD