Emerald|Natural|GIA

0.51ct E SI1 Emerald Natural Diamond

EX • E/SI1 • GIA 2566017480

Certificate GIA 2566017480

Diamond specifications and retailer prices

From $659 USD
As of October 23, 2026
Save $228 USD (26%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,993 USD at NZ Jewellers · As of October 20, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566017480. Listed at 16 retailers as of October 23, 2026, with a 35% 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566017480
Dimensions5.57 × 3.72 × 2.46 mm
L/W Ratio1.50
Girdle conditionPolished
Top View
5.57 mm3.72 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566017480
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

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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 23
Current: $1,993 USD|Low: $429 USD|High: $2,052 USD|Avg: $879 USD|-2.9%
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
Retailer 15
Retailer 16
October 23, 2026
Retailer 7$525 USD
Retailer 11$580 USD
Retailer 12$633 USD
Retailer 10$638 USD
Retailer 5$648 USD
Retailer 16$659 USD
Retailer 14$665 USD
Retailer 13$771 USD
Retailer 9$815 USD
Retailer 6$850 USD
Retailer 2$887 USD
Retailer 3$927 USD
Retailer 15$970 USD
Retailer 8$984 USD
Retailer 4$1,476 USD
NZ Jewellers$1,993 USD

20 data points across 16 retailers

16 retailers$659 USD to $887 USD

A
Retailer 1
-
$525 USD
HK$4,100 HKD
Price last confirmed 7 days ago
A
Retailer 2
-
$633 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$638 USD
€608 EUR
View
Price last confirmed 6 days ago
A
Retailer 4
-
$648 USD
SGD 876 SGD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$659 USD
View
A
Retailer 6
-
$665 USD
£523 GBP
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$771 USD
£607 GBP
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$815 USD
View
Price last confirmed 5 days ago
B+
Retailer 9
-
$850 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$860 USD
£677 GBP
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$887 USD
€845 EUR
View
B+
Retailer 12
-
$927 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$970 USD
ZAR 15,670 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$984 USD
A$1,513 AUD
View
Price last confirmed 24 days ago
B
Retailer 15
-
$1,476 USD
£1,162 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
0935f67e-5a7e-4757-bb0e-c6b24f30efcd · Oct 20
$1,993 USD
View
Price under review
15 more retailers have this diamond
Prices start from $659 USDSave up to $228 USD

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
$659 USD