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Emerald|Natural|GIA

0.51ct G SI1 Emerald Natural Diamond

EX • G/SI1 • GIA 2518144919

Certificate GIA 2518144919

Diamond specifications and retailer prices

From $622 AUD
$437 USD
As of October 29, 2026
Save $242 AUD (28%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $864 AUD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2518144919. Listed at 7 retailers as of October 29, 2026, with prices from $622 to $864, a $242 spread on the same certified stone. 77 Diamonds lists it at $864. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2518144919
Dimensions5.17 × 3.80 × 2.60 mm
L/W Ratio1.36
Top View
5.17 mm3.80 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2518144919
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $864 AUD|Low: $540 AUD|High: $1,068 AUD|Avg: $803 AUD|+0.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5$622 AUD
Retailer 2$624 AUD
Retailer 3$641 AUD
Retailer 6$669 AUD
Retailer 10$690 AUD
Retailer 4$746 AUD
77 Diamonds$864 AUD
Retailer 7$1,025 AUD
Retailer 8$1,025 AUD
Retailer 9$1,068 AUD

37 data points across 10 retailers

7 retailers$622 AUD to $864 AUD

A
Cheapest Retailer
-
$622 AUD
$437 USD
Final sale: no returns
A
Retailer 2
-
$624 AUD
$438 USD
View
A
Retailer 3
-
$641 AUD
$450 USD
View
A
Retailer 4
-
$669 AUD
MYR 1,915 MYR
View
Retailer 5
-
$690 AUD
$484 USD
View
Price last confirmed 97 days ago
A
Retailer 6
-
$746 AUD
SGD 708 SGD
View
Most Expensive
B+
77 Diamonds
EMCPBPXRYRUP · Oct 30
$864 AUD
£478 GBP
View
6 more retailers have this diamond
Prices start from $622 AUDSave up to $242 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 Emerald
$622 AUD