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Round|Lab Grown|GIA

0.51ct G SI2 Round Lab Grown Diamond

EX • G/SI2

Diamond specifications and retailer prices

From $745 NZD
$420 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: $745 NZD at Rare Carat
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Rare Carat

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions5.08 × 5.05 × 3.19 mm
L/W Ratio1.01
Top View
5.08 mm5.05 mm0.51 ctG / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCuletDepth 63.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $745 NZD|Low: $587 NZD|High: $3,157 NZD|Avg: $1,508 NZD|-6.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 21, 2026
Retailer 4$587 NZD
Retailer 5$699 NZD
Rare Carat$745 NZD
Retailer 3$2,321 NZD
Retailer 2$3,157 NZD

3 data points across 5 retailers

1 retailer

B
Rare Carat
7521666987 · Nov 1
$745 NZD
$420 USD
View

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 Round
$745 NZD