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Marquise|Natural|GIA

0.51ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 7548950012

Certificate GIA 7548950012

Diamond specifications and retailer prices

From $1,321 AUD
$926 USD
As of October 31, 2026
Save $741 AUD (36%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,063 AUD at Diamond Exchange Canada · As of November 2, 2026
View at Diamond Exchange Canada

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded G 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 7548950012. Listed at 9 retailers as of October 31, 2026, with prices from $1,321 to $2,063, a $741 spread on the same certified stone. Diamond Exchange Canada lists it at $2,063. 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

0.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7548950012
Dimensions7.85 × 4.12 × 2.64 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
7.85 mm4.12 mm0.51 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7548950012
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 64.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,063 AUD|Low: $704 AUD|High: $2,063 AUD|Avg: $1,434 AUD
Diamond Exchange Canada
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 3$704 AUD
Retailer 12$1,090 AUD
Retailer 4$1,217 AUD
Retailer 11$1,321 AUD
Retailer 9$1,427 AUD
Retailer 10$1,427 AUD
Retailer 6$1,433 AUD
Retailer 7$1,470 AUD
Retailer 2$1,659 AUD
Retailer 5$1,698 AUD
Retailer 8$1,801 AUD
Diamond Exchange Canada$2,063 AUD

22 data points across 12 retailers

9 retailers$1,321 AUD to $2,063 AUD

B+
Cheapest Retailer
-
$1,321 AUD
$926 USD
B
Retailer 2
-
$1,427 AUD
$1,000 USD
View
B
Retailer 3
-
$1,427 AUD
$1,000 USD
View
B
Retailer 4
-
$1,433 AUD
$1,004 USD
View
B+
Retailer 5
-
$1,470 AUD
$1,030 USD
View
B
Retailer 6
-
$1,659 AUD
€1,107 EUR
View
B
Retailer 7
-
$1,698 AUD
£937 GBP
View
B
Retailer 8
-
$1,801 AUD
$1,262 USD
View
Most Expensive
B
Diamond Exchange Canada
1994949657 · Nov 2
$2,063 AUD
CA$2,008 CAD
View
8 more retailers have this diamond
Prices start from $1,321 AUDSave up to $741 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
$1,321 AUD