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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7553135928

Certificate GIA 7553135928

Diamond specifications and retailer prices

From $1,736 NZD
$977 USD
As of November 1, 2026
Save $1,287 NZD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,587 NZD at MOH London · As of November 2, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 7553135928. Listed at 13 retailers as of October 31, 2026, with a 74% 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.78°
Pavilion angle42.14°
OriginNatural
Grading LabGIA
CertificateGIA 7553135928
Dimensions8.31 × 4.00 × 2.66 mm
L/W Ratio2.08
Girdle conditionVery Thick
Key to symbols
Feather
Top View
8.31 mm4.00 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553135928
Side View
Table 60.0%Crown 38.78°GirdlePavilion 42.14°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,587 NZD|Low: $1,774 NZD|High: $4,777 NZD|Avg: $2,639 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$1,774 NZD
Retailer 10$1,774 NZD
Retailer 6$1,843 NZD
Retailer 9$2,047 NZD
Retailer 2$2,214 NZD
Retailer 5$2,561 NZD
Retailer 3$2,745 NZD
Retailer 4$3,023 NZD
MOH London$3,587 NZD
Retailer 7$4,777 NZD

43 data points across 10 retailers

13 retailers$1,736 NZD to $3,023 NZD

B
Cheapest Retailer
-
$1,736 NZD
$977 USD
B
Retailer 2
-
$1,756 NZD
$988 USD
View
B
Retailer 3
-
$1,774 NZD
$998 USD
View
B
Retailer 4
-
$1,774 NZD
$998 USD
View
B
Retailer 5
-
$1,843 NZD
$1,037 USD
View
B
Retailer 6
-
$1,947 NZD
$1,095 USD
View
B
Retailer 7
-
$2,047 NZD
$1,152 USD
View
B
Retailer 8
-
$2,214 NZD
£981 GBP
View
Retailer 9
-
$2,561 NZD
A$2,217 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$2,745 NZD
€1,471 EUR
View
B
Retailer 11
-
$3,023 NZD
ZAR 27,482 ZAR
View
Most Expensive
MOH London
CF7004367 · Nov 2
$3,587 NZD
£1,589 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $1,736 NZDSave up to $1,287 NZD

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
$1,736 NZD