CaratHunter
Plans
Emerald|Natural|GIA

0.51ct G SI1 Emerald Natural Diamond

EX • G/SI1 • GIA 2557408109

Certificate GIA 2557408109

Diamond specifications and retailer prices

From HK$4,001 HKD
$510 USD
As of October 31, 2026
Save HK$6,023 HKD (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$13,612 HKD 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 October 31, 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: Oct 31
Current: HK$13,612 HKD|Low: HK$3,672 HKD|High: HK$13,612 HKD|Avg: HK$6,358 HKD
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 4HK$4,001 HKD
Retailer 14HK$4,339 HKD
Retailer 3HK$4,676 HKD
Retailer 11HK$4,676 HKD
Retailer 13HK$5,006 HKD
Retailer 2HK$5,329 HKD
Retailer 12HK$5,440 HKD
Retailer 8HK$5,482 HKD
Retailer 5HK$5,884 HKD
Retailer 9HK$6,459 HKD
Retailer 6HK$6,527 HKD
Retailer 10HK$6,700 HKD
Retailer 7HK$10,024 HKD
NZ JewellersHK$13,612 HKD

32 data points across 14 retailers

14 retailersHK$4,001 HKD to HK$10,024 HKD

A
Cheapest Retailer
-
HK$4,001 HKD
$510 USD
Final sale: no returns
B+
Retailer 2
-
HK$4,339 HKD
$553 USD
View
B+
Retailer 3
-
HK$4,676 HKD
$596 USD
View
B+
Retailer 4
-
HK$4,676 HKD
$596 USD
View
B+
Retailer 5
-
HK$5,006 HKD
$638 USD
View
B+
Retailer 6
-
HK$5,329 HKD
£535 GBP
View
B+
Retailer 7
-
HK$5,440 HKD
£546 GBP
View
B+
Retailer 8
-
HK$5,482 HKD
£550 GBP
View
B+
Retailer 9
-
HK$5,884 HKD
$750 USD
View
B+
Retailer 10
-
HK$6,459 HKD
€784 EUR
View
Retailer 11
-
HK$6,527 HKD
A$1,280 AUD
View
Price last confirmed 28 days ago
B
Retailer 12
-
HK$6,700 HKD
ZAR 13,796 ZAR
View
B
Retailer 13
-
HK$10,024 HKD
£1,006 GBP
View
Most Expensive
NZ Jewellers
99b69c18-8084-4b64-a681-0e04de0ab1e0 · Oct 30
HK$13,612 HKD
$1,735 USD
View
Price under review
13 more retailers have this diamond
Prices start from HK$4,001 HKDSave up to HK$6,023 HKD

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
HK$4,001 HKD