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Emerald|Natural|GIA

0.51ct H SI2 Emerald Natural Diamond

GD • H/SI2 • GIA 6555560373

Certificate GIA 6555560373

Diamond specifications and retailer prices

From $639 NZD
As of November 4, 2026
Save $181 NZD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $819 NZD at 77 Diamonds · As of November 6, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555560373. Listed at 4 retailers as of November 4, 2026, with prices from $639 to $819, a $181 spread on the same certified stone. 77 Diamonds lists it at $819. 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
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555560373
Dimensions5.22 × 3.78 × 2.65 mm
L/W Ratio1.38
Culet sizeNone
Key to symbols
Crystal, Feather, Knot
Top View
5.22 mm3.78 mm0.51 ctH / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6555560373
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.9%

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 4
Current: $819 NZD|Low: $567 NZD|High: $829 NZD|Avg: $705 NZD|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$639 NZD
Retailer 2$667 NZD
Retailer 3$713 NZD
77 Diamonds$819 NZD

42 data points across 4 retailers

4 retailers$639 NZD to $819 NZD

B+
Cheapest Retailer
-
$639 NZD
B+
Retailer 2
-
$667 NZD
View
Final sale: no returns
B+
Retailer 3
-
$713 NZD
View
Most Expensive
B+
77 Diamonds
EMCPAMUCEPXX · Nov 6
$819 NZD
£363 GBP
View
3 more retailers have this diamond
Prices start from $639 NZDSave up to $181 NZD

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
$639 NZD