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Radiant|Lab Grown|IGI

1.00ct G SI1 Radiant Lab Grown Diamond

GD • G/SI1 • IGI LG591307713

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG591307713

Diamond specifications and retailer prices

From $628 NZD
€337 EUR
As of October 31, 2026
Save $32 NZD (5%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $745 NZD at Rare Carat · As of September 24, 2026
View at Rare Carat

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG591307713 or 591307713. Listed at 4 retailers as of October 31, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.00
Carat
G
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591307713
Dimensions6.92 × 5.14 × 3.47 mm
L/W Ratio1.35
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.92 mm5.14 mm1.00 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591307713
Side View
Table 64.0%Crown 40°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $745 NZD|Low: $280 NZD|High: $2,271 NZD|Avg: $811 NZD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 12$280 NZD
Retailer 4$385 NZD
Retailer 10$401 NZD
Retailer 5$500 NZD
Retailer 6$543 NZD
Retailer 2$628 NZD
Retailer 7$635 NZD
Retailer 8$660 NZD
Rare Carat$745 NZD
Retailer 13$901 NZD
Retailer 3$1,195 NZD
Retailer 9$1,514 NZD
Retailer 11$2,271 NZD

13 data points across 13 retailers

4 retailers$628 NZD to $660 NZD

Retailer 1
-
$500 NZD
HK$2,200 HKD
Price last confirmed 58 days ago
B+
Retailer 2
-
$628 NZD
€337 EUR
View
B+
Retailer 3
-
$660 NZD
$372 USD
View
Most Expensive
Rare Carat
2947708_l_591307713 · Sep 24
$745 NZD
$420 USD
View
Price last confirmed 38 days ago
3 more retailers have this diamond
Prices start from $628 NZDSave up to $32 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+
1.00ct Radiant
$628 NZD