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Emerald|Natural|GIA

0.51ct H SI1 Emerald Natural Diamond

GD • H/SI1 • GIA 2564177545

Certificate GIA 2564177545

Diamond specifications and retailer prices

From $755 AUD
$530 USD
As of November 1, 2026
Save $434 AUD (37%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,350 AUD at Torres Jewel Co · As of October 4, 2026
View at Torres Jewel Co

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2564177545. Listed at 15 retailers as of October 31, 2026, with a 57% 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564177545
Dimensions5.35 × 3.82 × 2.55 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
5.35 mm3.82 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564177545
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

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: Nov 1
Current: $1,009 AUD|Low: $565 AUD|High: $4,383 AUD|Avg: $2,006 AUD|+26.6%
Retailer 1
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
Torres Jewel Co
November 1, 2026
Retailer 8$565 AUD
Retailer 10$755 AUD
Retailer 11$838 AUD
Retailer 1$1,009 AUD
Retailer 9$1,188 AUD
Retailer 3$1,721 AUD
Retailer 16$1,797 AUD
Retailer 7$1,866 AUD
Retailer 2$1,965 AUD
Retailer 5$1,989 AUD
Retailer 15$2,074 AUD
Retailer 6$2,233 AUD
Torres Jewel Co$2,350 AUD
Retailer 12$2,779 AUD
Retailer 4$3,034 AUD
Retailer 13$3,330 AUD
Retailer 14$4,383 AUD

34 data points across 17 retailers

15 retailers$755 AUD to $1,188 AUD

B+
Cheapest Retailer
-
$755 AUD
$530 USD
B+
Retailer 2
-
$838 AUD
HK$4,600 HKD
View
B
Retailer 3
-
$1,009 AUD
£558 GBP
View
B
Retailer 4
-
$1,188 AUD
€795 EUR
View
Retailer 5
-
$1,721 AUD
$1,209 USD
View
Price last confirmed 27 days ago
Retailer 6
-
$1,797 AUD
$1,262 USD
View
Price last confirmed 24 days ago
Retailer 7
-
$1,866 AUD
$1,311 USD
View
Price under review
Retailer 8
-
$1,989 AUD
$1,397 USD
View
Price under review
Retailer 9
-
$2,074 AUD
$1,457 USD
View
Price under review
Retailer 10
-
$2,233 AUD
£1,235 GBP
View
Price under review
Most Expensive
Torres Jewel Co
25704974 · Oct 4
$2,350 AUD
View
Price under review
10 more retailers have this diamond
Prices start from $755 AUDSave up to $434 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 Emerald
$755 AUD