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Marquise|Natural|GIA

0.51ct H VS1 Marquise Natural Diamond

VG • H/VS1 • GIA 5553872066

Certificate GIA 5553872066

Diamond specifications and retailer prices

From $1,665 AUD
$1,167 USD
As of October 31, 2026
Save $176 AUD (10%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,359 AUD at NZ Jewellers · As of October 6, 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 VS1 clarity (very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5553872066. Listed at 12 retailers as of October 30, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
VS1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5553872066
Dimensions8.05 × 4.15 × 2.61 mm
L/W Ratio1.94
Culet sizeNone
Top View
8.05 mm4.15 mm0.51 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5553872066
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NDepth 62.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $3,359 AUD|Low: $920 AUD|High: $3,359 AUD|Avg: $1,450 AUD
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
Retailer 19
Retailer 20
Retailer 21
October 28, 2026
Retailer 21$920 AUD
Retailer 19$970 AUD
Retailer 7$1,007 AUD
Retailer 20$1,120 AUD
Retailer 14$1,125 AUD
Retailer 6$1,126 AUD
Retailer 9$1,140 AUD
Retailer 18$1,231 AUD
Retailer 11$1,280 AUD
Retailer 10$1,287 AUD
Retailer 12$1,502 AUD
Retailer 17$1,504 AUD
Retailer 4$1,610 AUD
Retailer 3$1,656 AUD
Retailer 16$1,665 AUD
Retailer 2$1,784 AUD
Retailer 15$1,784 AUD
Retailer 13$1,841 AUD
Retailer 8$1,986 AUD
Retailer 5$2,153 AUD
NZ Jewellers$3,359 AUD

12 data points across 21 retailers

12 retailers$1,665 AUD to $1,841 AUD

Retailer 1
-
$920 AUD
$645 USD
Price last confirmed 26 days ago
Retailer 2
-
$970 AUD
$680 USD
View
Price last confirmed 26 days ago
Retailer 3
-
$1,120 AUD
$785 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$1,502 AUD
$1,053 USD
View
Price last confirmed 27 days ago
Retailer 5
-
$1,610 AUD
View
Price last confirmed 30 days ago
Retailer 6
-
$1,656 AUD
ZAR 18,753 ZAR
View
Price last confirmed 29 days ago
B
Retailer 7
-
$1,665 AUD
$1,167 USD
View
B
Retailer 8
-
$1,784 AUD
$1,250 USD
View
B
Retailer 9
-
$1,784 AUD
$1,250 USD
View
B
Retailer 10
-
$1,841 AUD
$1,290 USD
View
Retailer 11
-
$2,153 AUD
£1,188 GBP
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
e5a73c26-c42a-408e-b568-6192b0066789 · Oct 6
$3,359 AUD
$2,354 USD
View
Price last confirmed 27 days ago
11 more retailers have this diamond
Prices start from $1,665 AUDSave up to $176 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.

B
0.51ct Marquise
$1,665 AUD