How much does a 1.00 to 1.49ct G SI1 lab grown asscher diamond cost?

As of September 2026, 1.00 to 1.49ct G SI1 lab grown asscher diamonds typically cost £225 GBP to £3,193 GBP, with a median price of £1,530 GBP. There are currently 11 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI1 asscher diamond?

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct G SI1 Lab Grown Asscher

Quick answer

As of September 2026, there are 11 lab grown asscher diamonds with G colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £225 GBP to £3,193 GBP, with a median of £1,530 GBP. At least 16 retailers stock this exact specification. Half of all listings fall between £262 GBP and £545 GBP per carat. The same specification in natural form lists at a median of about £2,502 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Asscher lab grown stones in the index: 526 USD per carat, +3.3% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

£118 GBP

Highest Price

£3,557 GBP

Average Price

£1,623 GBP

Market Intelligence

Retailers Selling

Price Spread

79.5%

Price Range

Price per carat distribution across retailers

$481/ct

10th Percentile

$268

Median

$481

90th Percentile

$1,230

Score Distribution

11 diamonds scored across 3 quality tiers

Excellent

2 (18.2%)

Very Good

2 (18.2%)

Average

7 (63.6%)

Find Your Diamond

Search 11 G SI1 asscher diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

G SI2SI2 inclusions are not visible without magnification

Save 15%

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1