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Emerald|Natural|GIA

0.51ct G SI1 Emerald Natural Diamond

EX • G/SI1 • GIA 2557408109

Certificate GIA 2557408109

Diamond specifications and retailer prices

From $726 AUD
$510 USD
As of November 2, 2026
Save $1,093 AUD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,470 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 2557408109. Listed at 14 retailers as of November 1, 2026, with a 151% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557408109
Dimensions5.15 × 3.72 × 2.62 mm
L/W Ratio1.38
Culet sizeNone
Top View
5.15 mm3.72 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557408109
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 70.4%

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: $2,470 AUD|Low: $666 AUD|High: $2,470 AUD|Avg: $1,154 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
November 1, 2026
Retailer 4$726 AUD
Retailer 14$787 AUD
Retailer 3$848 AUD
Retailer 11$848 AUD
Retailer 13$908 AUD
Retailer 2$967 AUD
Retailer 12$987 AUD
Retailer 8$995 AUD
Retailer 5$1,068 AUD
Retailer 9$1,172 AUD
Retailer 6$1,184 AUD
Retailer 10$1,216 AUD
Retailer 7$1,819 AUD
NZ Jewellers$2,470 AUD

32 data points across 14 retailers

14 retailers$726 AUD to $1,819 AUD

A
Cheapest Retailer
-
$726 AUD
$510 USD
Final sale: no returns
B+
Retailer 2
-
$787 AUD
$553 USD
View
B+
Retailer 3
-
$848 AUD
$596 USD
View
B+
Retailer 4
-
$848 AUD
$596 USD
View
B+
Retailer 5
-
$908 AUD
$638 USD
View
B+
Retailer 6
-
$967 AUD
£535 GBP
View
B+
Retailer 7
-
$987 AUD
£546 GBP
View
B+
Retailer 8
-
$995 AUD
£550 GBP
View
B+
Retailer 9
-
$1,068 AUD
$750 USD
View
B+
Retailer 10
-
$1,172 AUD
€784 EUR
View
Retailer 11
-
$1,184 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$1,216 AUD
ZAR 13,796 ZAR
View
B
Retailer 13
-
$1,819 AUD
£1,006 GBP
View
Most Expensive
NZ Jewellers
99b69c18-8084-4b64-a681-0e04de0ab1e0 · Oct 30
$2,470 AUD
$1,735 USD
View
Price under review
13 more retailers have this diamond
Prices start from $726 AUDSave up to $1,093 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
$726 AUD