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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 $510 USD
As of October 29, 2026
Save $796 USD (61%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,257 USD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

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 29, 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
Color
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 29
Current: $1,281 USD|Low: $510 USD|High: $3,190 USD|Avg: $1,219 USD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6$510 USD
Retailer 5$692 USD
Retailer 9$775 USD
Retailer 7$803 USD
Retailer 10$980 USD
Retailer 2$1,163 USD
Retailer 1$1,281 USD
Retailer 8$1,306 USD
Retailer 4$1,977 USD
Retailer 3$3,169 USD

40 data points across 10 retailers

12 retailers$510 USD to $1,306 USD

B+
Cheapest Retailer
-
$510 USD
B
Retailer 2
-
$692 USD
View
B
Retailer 3
-
$753 USD
View
B
Retailer 4
-
$775 USD
View
Final sale: no returns
Retailer 5
-
$803 USD
View
Price last confirmed 14 days ago
B
Retailer 6
-
$803 USD
View
B
Retailer 7
-
$980 USD
View
B
Retailer 8
-
$1,281 USD
£1,009 GBP
View
B
Retailer 9
-
$1,306 USD
View
Retailer 10
-
$1,977 USD
View
Price under review
Most Expensive
NZ Jewellers
db264300-efe3-4497-8db5-faf00fd44e4f · Oct 27
$2,257 USD
View
Price under review
10 more retailers have this diamond
Prices start from $510 USDSave up to $796 USD

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
$510 USD