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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 1563201117

Certificate GIA 1563201117

Diamond specifications and retailer prices

From $752 AUD
₹50,219 INR
As of November 2, 2026
Save $1,587 AUD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,176 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 1563201117. Listed at 14 retailers as of November 1, 2026, with a 211% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1563201117
Dimensions8.62 × 4.10 × 2.38 mm
L/W Ratio2.10
Culet sizeNone
Key to symbols
Feather
Top View
8.62 mm4.10 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1563201117
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.1%

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 2
Current: $3,176 AUD|Low: $751 AUD|High: $3,226 AUD|Avg: $1,366 AUD|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2$752 AUD
Retailer 3$935 AUD
Retailer 6$935 AUD
Retailer 10$1,013 AUD
Retailer 9$1,052 AUD
Retailer 11$1,052 AUD
Retailer 4$1,169 AUD
Retailer 8$1,170 AUD
Retailer 12$1,231 AUD
Retailer 5$1,243 AUD
Retailer 7$2,340 AUD
NZ Jewellers$3,176 AUD

17 data points across 12 retailers

14 retailers$752 AUD to $2,340 AUD

A
Cheapest Retailer
-
$752 AUD
₹50,219 INR
B+
Retailer 2
-
$858 AUD
HK$4,700 HKD
View
Retailer 3
-
$935 AUD
$655 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
$935 AUD
$655 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,013 AUD
$710 USD
View
B+
Retailer 6
-
$1,052 AUD
$737 USD
View
B+
Retailer 7
-
$1,052 AUD
SGD 996 SGD
View
B
Retailer 8
-
$1,169 AUD
$819 USD
View
B
Retailer 9
-
$1,170 AUD
$820 USD
View
B
Retailer 10
-
$1,231 AUD
$863 USD
View
B
Retailer 11
-
$1,243 AUD
£686 GBP
View
Retailer 12
-
$1,703 AUD
View
Price last confirmed 30 days ago
C
Retailer 13
-
$2,340 AUD
£1,291 GBP
View
Most Expensive
NZ Jewellers
6662c6bd-8578-4f95-ba5c-ea3c8e1051da · Oct 30
$3,176 AUD
$2,226 USD
View
Price under review
13 more retailers have this diamond
Prices start from $752 AUDSave up to $1,587 AUD

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
$752 AUD