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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG472170743

Shape and cutting style on the report: Round brilliant

Certificate IGI LG472170743

Diamond specifications and retailer prices

From $1,050 NZD
$590 USD
As of October 29, 2026
Save $1,275 NZD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,520 NZD at Friendly Diamonds · As of October 28, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG472170743 or 472170743. Listed at 11 retailers as of October 28, 2026, with a 121% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472170743
Dimensions6.39 × 6.34 × 3.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.39 mm6.34 mm1.00 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472170743
Side View
Table 58.0%Crown 34.4°Girdle: ThickPavilion 40°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,520 NZD|Low: $983 NZD|High: $5,680 NZD|Avg: $2,021 NZD
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 6$1,050 NZD
Retailer 5$1,232 NZD
Retailer 11$1,341 NZD
Retailer 9$1,378 NZD
Retailer 7$1,430 NZD
Retailer 10$1,430 NZD
Retailer 3$2,071 NZD
Retailer 2$2,282 NZD
Retailer 8$2,325 NZD
Friendly Diamonds$3,520 NZD
Retailer 4$5,642 NZD

39 data points across 11 retailers

11 retailers$1,050 NZD to $2,325 NZD

B
Cheapest Retailer
-
$1,050 NZD
$590 USD
B
Retailer 2
-
$1,232 NZD
$692 USD
View
B
Retailer 3
-
$1,341 NZD
$753 USD
View
B
Retailer 4
-
$1,378 NZD
$774 USD
View
Final sale: no returns
B
Retailer 5
-
$1,430 NZD
$803 USD
View
Retailer 6
-
$1,430 NZD
$803 USD
View
Price last confirmed 13 days ago
B
Retailer 7
-
$2,282 NZD
£1,009 GBP
View
B
Retailer 8
-
$2,325 NZD
$1,306 USD
View
Most Expensive
Friendly Diamonds
1590671 · Oct 28
$3,520 NZD
$1,977 USD
View
Price under review
8 more retailers have this diamond
Prices start from $1,050 NZDSave up to $1,275 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
$1,050 NZD