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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG487174470

Shape and cutting style on the report: Round brilliant

Certificate IGI LG487174470

Diamond specifications and retailer prices

From $905 NZD
$510 USD
As of October 31, 2026
Save $1,412 NZD (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,508 NZD at Friendly Diamonds · As of October 30, 2026
View at Friendly Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487174470 or 487174470. Listed at 12 retailers as of October 31, 2026, with a 156% 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

1.00
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487174470
Dimensions6.40 × 6.36 × 3.97 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.40 mm6.36 mm1.00 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG487174470
Side View
Table 60.5%Crown 33.9°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 62.2%

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: Oct 31
Current: $3,508 NZD|Low: $905 NZD|High: $5,660 NZD|Avg: $2,192 NZD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$905 NZD
Retailer 4$1,228 NZD
Retailer 8$1,375 NZD
Retailer 6$1,425 NZD
Retailer 9$1,739 NZD
Retailer 10$2,064 NZD
Retailer 3$2,274 NZD
Retailer 7$2,317 NZD
Friendly Diamonds$3,508 NZD
Retailer 2$5,593 NZD

39 data points across 10 retailers

12 retailers$905 NZD to $2,317 NZD

B+
Cheapest Retailer
-
$905 NZD
$510 USD
B
Retailer 2
-
$1,228 NZD
$692 USD
View
B
Retailer 3
-
$1,336 NZD
$753 USD
View
B
Retailer 4
-
$1,375 NZD
$775 USD
View
Final sale: no returns
Retailer 5
-
$1,425 NZD
$803 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
$1,425 NZD
$803 USD
View
B
Retailer 7
-
$1,739 NZD
$980 USD
View
B
Retailer 8
-
$2,274 NZD
£1,009 GBP
View
B
Retailer 9
-
$2,317 NZD
$1,306 USD
View
Most Expensive
Friendly Diamonds
1595461 · Oct 30
$3,508 NZD
$1,977 USD
View
Price under review
9 more retailers have this diamond
Prices start from $905 NZDSave up to $1,412 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 Round
$905 NZD